通过调节铁化,LACTB可以抑制肝癌的进展
Kaixuan Zeng1, Na Huang2, Nanbin Liu3
1Department of Geriatric Hepatobiliary, Pancreatic and Spleen Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China; National-Local Joint Engineering Research Center of Biodiagnosis & Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China; Tumor and Immunology Center of Precision Medicine Institute, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.
血清蛋白β-乳糖酶样蛋白 (LACTB) 通过诱导依赖铁的细胞死亡 (铁死) 来抑制肝癌. LACTB针对HSPA8,影响ferritinophagy和关键的ferroptosis调节器,提供新的治疗途径.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 铁,一种依赖于铁的细胞死亡,是癌症的关键防御机制.
- 控制癌症中铁亡的调节途径仍然不完全理解.
研究的目的:
- 为了研究血清蛋白β-乳糖酶样蛋白 (LACTB) 在肝癌进展中的作用.
- 阐明LACTB调节铁亡的分子机制.
主要方法:
- 基因表达分析 (肝癌中的LACTB下调).
- 功能性测试 (细胞活力,殖民地形成,瘤生长) 作为对LACTB调节的反应.
- 通过p53.3研究LACTB通过p53.3对HSPA8的转录调节.
- 对NCOA4介导的费里丁和SLC7A11/GSH/GPX4信号传导的下游影响的分析.
- 在体内评估伦瓦替尼与LACTB的相互作用.
主要成果:
- 在肝癌中,LACTB的表达减少,其子宫外表达抑制了瘤的生长.
- LACTB以p53依赖的方式抑制HSPA8转录,增加ferritinophagy并抑制ferroptosis通路.
- 在HSPA8促进体的p53结合部位的突变赋予了对铁亡的抵抗力,并削弱了LACTB的作用.
- LACTB是伦瓦提尼布的标;其调节影响伦瓦提尼布的抗瘤疗效.
结论:
- 在肝癌中,LACTB通过诱导铁亡作用作为瘤抑制剂.
- LACTB的机制涉及p53依赖的HSPA8抑制,导致铁亡.
- 在肝癌治疗中,LACTB代表了一个潜在的治疗点,以提高伦瓦提尼布在肝癌治疗中的疗效.
相关概念视频
Necrosis
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
Liver Regeneration
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
Targeted Cancer Therapies
There are several types of targeted therapies against...
Cancer-Critical Genes II: Tumor Suppressor Genes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Loss of Tumor Suppressor Gene Functions
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
mTOR Signaling and Cancer Progression
The mTOR pathway or the...


